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REVOLVING CREDIT FACILITY - Narrative (Details) - Revolving Credit Facility - USD ($)
Apr. 12, 2013
Jun. 28, 2015
Dec. 31, 2014
Oct. 21, 2014
Line of Credit Facility [Line Items]        
Line of credit facility term 3 years      
Line of credit facility, maximum borrowing capacity $ 25,000,000      
Line of credit facility, outstanding borrowings   $ 0 $ 0  
Amended Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit facility, additional borrowing capacity       $ 25,000,000